MSD has been working for more than a decade to reduce combined sewer overflows (CSOs) and eliminate sanitary sewer overflows (SSOs) into our local rivers and streams. To date, we have reduced CSOs by 6 billion gallons annually and made significant improvements in eliminating SSOs.


MSD has completed the first phase of its Wet Weather Program (2009 - 2021) and is now negotiating with the U.S. EPA on the the next set of wet weather projects.




For detailed information on MSD's Wet Weather Program, including budget, schedule, performance metrics, potential project risks, etc., please view or download the reports below:



  • Consent Decree Quarterly Reports (select a report from the list below):
  • Consent Decree Annual Reports (select a report from the list below):